Machine for grinding shingle-saws



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H. A. SQUIRE. MAGHINE FOR GRINDING SHINGLE SAWS. No. 341,071.

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MACHINE FOR GRINDING SHINGLE SAWS. No. 341,071. i Patented May 1886.

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MACHINE FOR GRINDING SHINGLE SAWS.

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H. A. SQUIRE.

MACHINE FOR GRINDING SHINGLE SAWS.

No. 341,071. Patented May 4, 1886.-

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MAGHINE FOR GRINDING SHINGLE SAWS. No. 341,071. Patented May 4, 1886.

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MAGHINE FOR GRINDING 'SHINGLE SAWS. No. 341,071.

' PatentedMa-y 4, 1886.

WITNESSES UNITED STATES PAT NT 'OFFICEQ HUBERT A. SQUIRE, or LUDINGTON, MICHIGAN.

MACHINE FOR GRINDING SHINGLE-SAWS.

SPECIFICATION forming part of Letters Patent NO. 341,071, dated May 1-, 1886.

Application filed January 5, 1886. Serial No. 187,724. (No model.)

To aZZ whom, it may concern.-

Be it known that I, HUBERT A. S UIRE, a citizen of the United States of America, residing at Ludington, in the State of Michigan, have invented certain new and useful Improvements in Machines for Grinding Shingle-Saws, of which the following is aspecification, reference being had therein to the accompanying drawings.

The object of this improvement is to provide a machine that is adapted to grinding shinglesaws without removing them from their collars. These results are attainable by the mechanism illustrated in the drawings, herewith filed as part hereof, in which the same letters of reference denote the same parts in the different views.

Figure l is a side elevation, partly in section, representing a shingle-saw-grinding machine embodying the features of my improvement. Fig. 2 is a top view of the same, with parts broken away for the purpose of more fully showing the construction and relation of other parts. Fig. 3 is a transverse section u taken on the line so a; of Fig. 1, and seen from the direction of the arrow 1, Fig. 2. Fig. 4 is a transverse section taken on the same line, but seen from the direction of the arrow 2, Fig. 2, and with some of the parts removed that are fully shown in other figures. Fig. 5 is an enlarged perspective representation of one of the parts detached. Fig. 6 is a perspective representation of the supporting-frame with parts broken away and removed. Fig. 7 is a detail side elevation.

A,A, B, O,O,O and D are distinct parts of a metal supporting-frame made in any appropriate form, and suitably secured to each other by bolts, substantially as shown at a b o.

E is a base for the supporting-frame. F is a longitudinal shaft, having ordinary bearings in the frame-pieces A D, to which it is secured in the usual manner by the j ournalcaps a and d. j

G is a transverse shaft, having ordinary bearings in the longitudinal frame-pieces 0 O to which it is secured by journal-caps g g, as

shown in Fig. 2.

F and G are bevel-gears fixed to the shafts F G in the usual manner, and arranged to mesh wfvitlli1 each other, for a purpose hereinafter set ort H is a friction-wheel suitably secured to the shaft F. Adjacent to the bearing 9 of the shaft G is an arm, K, having an integral hub, as shown, by means of which it is keyed to the shaft G, for a purpose hereinafter set forth.

L is. a perforated hubbed disk or circularlyflangedcollar keyed to the shaft G, or otherwise affixed thereto,adjacent to the arm K.

K is a shingle-saw, the body of which is inclined from the saw-collar k, as shown. The saw K is set on the shaft G, and secured in its position by flanged collars L L and nut 9 P is a sliding frame or carriage provided with integral rectangular projections p p p p on its front side, as more fully shown in Fig. 2, and at its rear side formed to fit the beveled edges of the frame-piece 0 as shown in Figs. 3 and 4, and slide upon the same, as hereinafter set forth. The body of the sliding carriage is provided with a longitudinal recess for clearing the sliding shaft-supporting bracket located centrally therewith, as shown in Figs. 3 and 4.

H is a screw-threaded shaft supported at its outer end by a pillow-block or hanger, h, bolted to the frame-piece A, and connected at its screw-threaded end with the correspondingly-perforated and threaded projection 11 of the carriage P. The shaft H is provided, as shown at h, with four radial arms, the object of which will be explained when the operation of the machine is set forth.

I is a bar pivoted to the sliding-carriage projection 11, as shown at p, and supported in the position shown by the rectangular projections 10 p of the carriage I.

1? is a roller supported by an axial bolt or rod set through perforated projections of the bar I, as shown in Fig. 2.

. The bar P isprovided at its free end with one or more spiral springs, Q, which bear against the body of the carriageP and hold the roller 1? against the saw, as shown, so that should the saw be buckled or crooked the spring or springs will force the roller out into the crooked parts thereof, for a purpose hereinafter explained.

R is an adjustable shaft supported by a fixed bracket, R, and brackets R R2 arranged to slide in perforations c and e of the framepiece 0. The sliding brackets R 3* are provided with boxes S S, which are supported by set -screws, as shown, and form bearings for the shaft B. By reason of this arrangement of the boxes the shaft B may be adjusted to an angular position, as shown in Fig. 2; The bracket B is bolted to the bar P of the carriage I, as shown at 8, Figs. 1 and 3.

D is a bracket affixed to the frame-pieces O and B, and provided with a recessed and slotted enlargement, d, for the reception of a perforated block, D set on the shaft R, as an additional adjustable bearing for the same. The block D is provided with perpendicular extensions, as shown in Fig. 1, which fit the slots in the bracket-enlargement d, and hold the block in its position, but allow it to take an angular position corresponding to that of the shaft It.

R is a paper or other suitable friction-bearing set over a reduced portion of the shaft R, to which it is secured by nut W.

R is anemery-wheel affi xed-to the shaft R in the usual manner by collars 1' r and nut r.

The bracket D and bearing-block D may be dispensed with, if deemed advisable.

Set in the fixed bracket R as an additional adjustable bearing for the shaft Ris a box, S, made in half-sections, doweled to each other, and provided with perpendicular extensions, as indicated by the dotted lines in the bracketframe in Fig. 3. sions are set in slots in the upper and lower parts of the bracket, and hold the box S in place, but allow it to take an angular position corresponding to that of the shaft R, the same as the block or hearing D in the bracket D. The shaft R is provided with a shoulder, as shown, on each side of the box-S for a purpose hereinafter set forth.

6* is the driving-pulley, which is to be provided with a feather fitting a corresponding groove in the shaft R, in order that the shaft B may, while being turned by pulleys S", move toward the saw K, for a purpose hereinafter explained. As nothing is claimed for this feature of the construction, it is not shown in the drawings.

Q is a bracket, bifurcated, as shown in Fig. 3, and bolted to the carriage-piece P5 and provided with a roller, q, which forms a bearing for a rope or chain, Q", which connects a weight, Q, with a lever, S", supported by the bracket 1t, and provided with a lug adjacent to the box 8*, as shown.

C is a bifurcated bracket bolted to the framepiece 0 and provided with a roller, 0, which forms a bearing for a rope, c, which connects a weight, 0, with end of the sliding bracket R, as seen in Fig. 2.

The sliding bracket R is provided with an adjustable collar, f, having an arm, j, which is connected by means of a bolt-pin, as shown in Fig. 2, with a bar, X, having an inclined front side agreeing with the inclination of the saw-plate K toward its periphery. This i11- cliued bar X is supported by the bracket B, through which it slides, as hereinafter ex- These perpendicular extenplained. The bracket It is provided with a set-screw, x, for moving the inclined bar X outward, as shown in Fig. 3, for a purpose hereinafter set forth.

The machine is put in motion by a belt applied to the pulley S. The weights 0 and Q, connected with sliding bracket R and through the lever S, and with the sliding box S in the fixed bracket R, will pull the shaft inward and cause the friction-bearingR to engage with the friction-wheel H, and the emery-wheel It to engage with thesaw K. The springs Q on the carriage-bar P will cause the roller P to constantly bear toward the saw. and enter any crooked parts of the same, and by giving a corresponding outward movement to the shaft R and emery-wheel R maintain a uniform thickness for the saw. The contact of the friction-bearing R with the friction-wheel H will cause the latter to turn and give motion to the saw through the geared shafts F and G. As the saw turns with the shaft G the arm K will engage with the radial arms .of the screw-threaded shaft H and cause the same to turn in the part 19 of the carriage, as more fully shown in Fig. 4, and draw the carriage 1? toward the saw K, and the box S in the bracket R, affixed to the carriage P, will engage with the adjacent shoulders on the shaft R and cause the same to move with the carriage. As the carriage moves toward the saw the inclined bar X, fixed to the bracket R, will slide through the fixed bracket R and cause the emery-wheel B to move outward and grind away the body of the saw at a corresponding inclination. The set-screw 0c in the rear of the bracket B may be operated as occasion may require, for the purpose of giving the inclined bar X rearward adjustment, for the purpose of compensating for the wear of the emerywheel, and it may be also adjusted for the purpose of setting the bar X farther out when a new emery-wheel having a greater periphery is applied to grinding the saw. The set-screw 2 in the front of the fixed bracket R is used for setting thelever S in as the emery-wheel on the shaft is worn away, in order that the lug on the lever may press against the box S and hold the emery-wheel against the saw.

In a full-sized machine the friction-wheel H is thirty-six'inches in diameter, and the friction-bearing R is two and one-half inches in diameter, and as the feed-screw H will make but one-quarter of a turn to each revolution of the saw K the emery-wheel will approach the collar of the saw slowly and effectively grind the saw away at an inclination, as shown.

After the feed-screw H has drawn the carriage the proper distance for giving the saw the inclination required, the feed may be 0perated in the reverse direction by the handwheel H, and the carriage quickly returned to the position shown, and the operation described repeated as often as required.

Having explained theconstruction and 0p eration of my improvement, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of the sliding carriage, the feed-screw provided with arms, substantially as shown, and the saw-supporting shaft provided with an arm for engaging the arms of the feedscrew and operating the sliding carriage, and the emery wheel-supporting shaft, as specified.

2. In combination with the adjustable bar of the sliding carriage, the shaft-supporting bracket fixed thereto, and provided with oscillating box or bearing'for the shaft, and tension-lever and weight for operating the shaft toward the saw, substantially as specified.

3. The sliding brackets provided with adjustable boxes, in combination with the driving-shaft and sliding-carriage support, as and for the purpose set forth.

4. The weight, in combination with the sliding bracket and driving-shaft, as and for the purpose set forth.

5. In combination with the adjustable bracket supported by and arranged to slide transversely in the sliding carriage-supportin g frame-piece, and the bracket fixed to the adjustable bar of the sliding carriage, the inclined bar fixed to the transversely-sliding bracket, and arranged to slide in the bracket fixed to the carriage as the latter is operated by the feedscrew, substantially as specified, for the purpose set forth.

6. The combination of the driving-shaft, the geared shaft provided with the frictionwheel, and the geared shaft provided with the arm for operating the feed-screw, as and for the purpose set forth;

7. The combination of the inclined bar, the

adjustable collar aff xed thereto, and the ad- 40 j acent sliding shaft-supporting bracket, as and for the purpose set forth.

8. The bar pivoted to thesliding carriage and provided with a spring or springs, and a roller for engaging with the saw and operat- 45 ing the shaft provided with emery-wheel, as and for the purpose set forth. v

In testimony whereof I affix my signature in presence of two witnesses.

HUBERT A. SQUIRE.

Witnesses:

A. H. HOAG, J. M. COATS. 

